Finding the Third Proportional to 21,020 and 28,049

Step by Step Solution

1. Step 1: Write the proportion equation
   21,020 : 28,049 = 28,049 : x
2. Step 2: Convert to fraction form
   21,020/28,049 = 28,049/x
3. Step 3: Cross multiply
   21,020x = 28,049 × 28,049
4. Step 4: Simplify right side
   21,020x = 786,746,401
5. Step 5: Solve for x
   x = 786,746,401/21,020
6. Step 6: Final answer
   x = 37,428.47